Grizzly Lathe G8688 User Manual
MODEL G8688  
MINI METAL LATHE  
OwNEr's MANuAL  
Copyright © SEptEMBEr, 2005 By grizzly induStrial, inC., rEViSEd JunE, 2012 (tr)  
wArNING: NO pOrTION Of THIs MANuAL MAy bE rEprODucED IN ANy sHApE  
Or fOrM wITHOuT THE wrITTEN ApprOvAL Of GrIzzLy INDusTrIAL, INc.  
(For ModElS ManuFaCturEd SinCE 3/09) #pC7563 printEd in China  
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Table of contents  
INTrODucTION............................................................................................................................... 2  
Manual accuracy........................................................................................................................ 2  
Contact info................................................................................................................................ 2  
Machine description................................................................................................................... 2  
identification ............................................................................................................................... 3  
Machine data Sheet................................................................................................................... 4  
sEcTION 1: sAfETy....................................................................................................................... 6  
Safety instructions for Machinery............................................................................................... 6  
additional Safety for Metal lathes ............................................................................................. 8  
sEcTION 2: cIrcuIT rEQuIrEMENTs ........................................................................................ 9  
110V operation .......................................................................................................................... 9  
sEcTION 3: sET up...................................................................................................................... 10  
needed for Set up ................................................................................................................... 10  
unpacking ................................................................................................................................ 10  
inventory................................................................................................................................... 11  
hardware recognition Chart.................................................................................................... 12  
Clean up .................................................................................................................................. 13  
Site Considerations.................................................................................................................. 13  
Moving & placing Mini lathe.................................................................................................... 14  
installing handwheel handles.................................................................................................. 15  
test run................................................................................................................................... 16  
sEcTION 4: OpErATIONs ........................................................................................................... 17  
Speed & power Controls.......................................................................................................... 17  
Chuck Jaws.............................................................................................................................. 18  
replacing Chuck Jaws............................................................................................................. 19  
removing/installing Chuck or Faceplate.................................................................................. 20  
tailstock ................................................................................................................................... 21  
tailstock positioning................................................................................................................. 21  
dead Center............................................................................................................................. 22  
tool post .................................................................................................................................. 22  
Steady rest.............................................................................................................................. 23  
Cross Slide............................................................................................................................... 24  
Compound Slide....................................................................................................................... 24  
Carriage.................................................................................................................................... 25  
gear Charts.............................................................................................................................. 26  
Change gears.......................................................................................................................... 26  
Cutting threads........................................................................................................................ 27  
sEcTION 5: AccEssOrIEs......................................................................................................... 28  
sEcTION 6: MAINTENANcE......................................................................................................... 30  
Schedule .................................................................................................................................. 30  
Cleaning ................................................................................................................................... 30  
lubrication................................................................................................................................ 30  
sEcTION 7: sErvIcE ................................................................................................................... 31  
troubleshooting........................................................................................................................ 31  
adjusting gibs.......................................................................................................................... 34  
replacing Motor Brushes......................................................................................................... 34  
tailstock alignment .................................................................................................................. 35  
Electrical Components ............................................................................................................. 37  
parts Breakdown...................................................................................................................... 38  
parts list .................................................................................................................................. 39  
wArrANTy AND rETurNs........................................................................................................ 45  
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INTrODucTION  
Manual Accuracy  
contact Info  
We stand behind our machines. if you have any  
service questions, parts requests or general ques-  
tions about the machine, please call or write us at  
the location listed below.  
We are proud to offer this manual with your new  
machine! We've made every effort to be exact  
with the instructions, specifications, drawings, and  
photographs of the machine we used when writ-  
ing this manual. however, sometimes errors do  
happen and we apologize for them.  
grizzly industrial, inc.  
1203 lycoming Mall Circle  
Muncy, pa 17756  
phone: (570) 546-9663  
Fax: (800) 438-5901  
also, owing to our policy of continuous improve-  
ment, your machine may not exactly match the  
manual. if you find this to be the case, and the dif-  
ference between the manual and machine leaves  
you in doubt, check our website for the latest  
manual update or call technical support for help.  
E-Mail: techsupport@grizzly.com  
if you have any comments regarding this manual,  
please write to us at the address below:  
Before calling, find the manufacture date of your  
machine by looking at the date stamped into the  
machine id label (see below). this will help us  
determine if the manual version you received  
matches the manufacture date of your machine.  
grizzly industrial, inc.  
technical documentation Manager  
p.o. Box 2069  
Bellingham, Wa 98227-2069  
Email: manuals@grizzly.com  
C
/o  
Machine Description  
Manufacture date  
of your Machine  
the metal lathe is used to remove material from  
a rotating workpiece, which is held in place on  
the spindle with a chuck or faceplate. the cutting  
tool is mounted on the carriage or tailstock and  
moved against the spinning workpiece to perform  
the cut.  
For your convenience, we post all available man-  
uals and manual updates for free on our website  
at www.grizzly.com. any updates to your model  
of machine will be reflected in these documents  
as soon as they are complete.  
typical cutting operations for a metal lathe include  
facing, turning, parting, drilling, reaming, grooving,  
knurling, and threading. there are a wide variety  
of tools and workpiece holding devices available  
for each of these operations.  
-2-  
Model G8688 (Mfg. 3/09+)  
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Identification  
B
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figure 1. g8688 identification.  
A. Control panel  
b. Chuck  
c. toolpost  
D. tailstock  
E. Bedways  
f. leadscrew  
G. Compound-Slide  
H. Cross-Slide  
I. thread dial indicator  
J. Feed lever  
K. longitudinal handwheel  
L. Chip tray  
NOTICE  
If you have never used this type of machine or equipment before, wE sTrONGLy rEcOMMEND  
that you read books, trade magazines, or get formal training before beginning any projects.  
regardless of the content in this section, Grizzly Industrial will not be held liable for accidents  
caused by lack of training.  
-3-  
Model G8688 (Mfg. 3/09+)  
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Machine Data sheet  
MACHINE DATA  
SHEET  
Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901  
MODEL G8688 7" X 12" MINI METAL LATHE  
Product Dimensions:  
Weight................................................................................................................................................................ 75 lbs.  
Width (side-to-side) x Depth (front-to-back) x Height............................................................... 27-3/4 x 11-1/2 x 12 in.  
Footprint (Length x Width)................................................................................................................. 27-3/4 x 8-3/4 in.  
Shipping Dimensions:  
Type..................................................................................................................................................... Cardboard Box  
Content........................................................................................................................................................... Machine  
Weight................................................................................................................................................................ 90 lbs.  
Length x Width x Height....................................................................................................................... 30 x 13 x 13 in.  
Must Ship Upright................................................................................................................................................... Yes  
Electrical:  
Power Requirement........................................................................................................... 110V, Single-Phase, 60 Hz  
Prewired Voltage.................................................................................................................................................. 110V  
Full-Load Current Rating.......................................................................................................................................... 3A  
Minimum Circuit Size.............................................................................................................................................. 15A  
Connection Type....................................................................................................................................... Cord & Plug  
Power Cord Included.............................................................................................................................................. Yes  
Power Cord Length................................................................................................................................................. 6 ft.  
Power Cord Gauge......................................................................................................................................... 14 AWG  
Plug Included.......................................................................................................................................................... Yes  
Included Plug Type................................................................................................................................................ 5-15  
Switch Type............................................................................................ Control Panel w/Magnetic Switch Protection  
Motors:  
Main  
Type..................................................................................................................................................... Universal  
Horsepower............................................................................................................................................. 3/4 HP  
Phase............................................................................................................................................ Single-Phase  
Amps.............................................................................................................................................................. 3A  
Speed.......................................................................................................................................... 0 – 2500 RPM  
Power Transfer .................................................................................................................................. Belt Drive  
Bearings..................................................................................................... Shielded & Permanently Lubricated  
Main Specifications:  
Operation Info  
Swing Over Bed........................................................................................................................................... 7 in.  
Distance Between Centers........................................................................................................................ 12 in.  
Swing Over Cross Slide......................................................................................................................... 2-1/8 in.  
Swing Over Saddle...................................................................................................................................... 5 in.  
Maximum Tool Bit Size........................................................................................................................... 5/16 in.  
Compound Travel.................................................................................................................................. 2-3/4 in.  
Carriage Travel.................................................................................................................................... 10-1/2 in.  
Cross Slide Travel................................................................................................................................. 2-3/4 in.  
Other  
Optional Stand......................................................................................................................................... G7313  
-4-  
Model G8688 (Mfg. 3/09+)  
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Headstock Info  
Spindle Bore........................................................................................................................................... 0.78 in.  
Spindle Size................................................................................................................................................. 3 in.  
Spindle Taper............................................................................................................................................ MT#3  
Number of Spindle Speeds................................................................................................................... Variable  
Spindle Speeds....................................................................................................................... 100 – 2500 RPM  
Spindle Type........................................................................................................................ Intrinsic Back Plate  
Spindle Bearings...................................................................... Sealed & Permanently Lubricated Ball Bearing  
Spindle Length....................................................................................................................................... 7-1/4 in.  
Spindle Length with 3-Jaw Chuck......................................................................................................... 9-3/4 in.  
Spindle Length with Faceplate.......................................................................................................... 7-13/16 in.  
Tailstock Info  
Tailstock Quill Travel............................................................................................................................. 2-1/2 in.  
Tailstock Taper.......................................................................................................................................... MT#2  
Tailstock Barrel Diameter..................................................................................................................... 0.870 in.  
Threading Info  
Number of Longitudinal Feeds......................................................................................................................... 1  
Range of Longitudinal Feeds........................................................................................................... 0.04 in./rev.  
Number of Inch Threads................................................................................................................................. 18  
Range of Inch Threads.................................................................................................................... 12 – 52 TPI  
Number of Metric Threads.............................................................................................................................. 10  
Range of Metric Threads.............................................................................................................. 0.4 – 2.0 mm  
Dimensions  
Bed Width.............................................................................................................................................. 3-1/4 in.  
Carriage Leadscrew Diameter.................................................................................................................. 5/8 in.  
Leadscrew TPI......................................................................................................................................... 16 TPI  
Carriage Leadscrew Length................................................................................................................ 17-3/4 in.  
Follow Rest Capacity................................................................................................................................... 1 in.  
Faceplate Size....................................................................................................................................... 6-1/4 in.  
Construction  
Base..................................................................................................................................................... Cast Iron  
Headstock............................................................................................................................................ Cast Iron  
End Gears................................................................................................................................................ Plastic  
Bed.......................................................................................................................... Precision-Ground Cast Iron  
Body..................................................................................................................................................... Cast Iron  
Paint Type/Finish...................................................................................................................................... Epoxy  
Other Specifications:  
Country Of Origin ............................................................................................................................................... China  
Warranty ........................................................................................................................................................... 1 Year  
Approximate Assembly & Setup Time ........................................................................................................ 45 Minutes  
Serial Number Location .................................................................................................. Back Right End on Bed Way  
ISO 9001 Factory .................................................................................................................................................. Yes  
CSA Certified .......................................................................................................................................................... No  
Features:  
16 TPI Reversible Leadscrew  
Chip Tray and Backsplash Guard  
Emergency Stop  
Forward and Reverse in all Speeds  
Inch/Metric Dials  
Threading Dial Indicator  
Variable Speed  
-5-  
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sEcTION 1: sAfETy  
for your Own safety, read Instruction  
Manual before Operating this Machine  
The purpose of safety symbols is to attract your attention to possible hazardous conditions. This  
manual uses a series of symbols and signal words which are intended to convey the level of  
importance of the safety messages. The progression of symbols is described below. remember  
that safety messages by themselves do not eliminate danger and are not a substitute for proper  
accident prevention measures.  
Indicates an imminently hazardous situation which, if not avoided,  
wILL result in death or serious injury.  
Indicates a potentially hazardous situation which, if not avoided,  
cOuLD result in death or serious injury.  
Indicates a potentially hazardous situation which, if not avoided,  
MAy result in minor or moderate injury. It may also be used to alert  
against unsafe practices.  
This symbol is used to alert the user to useful information about  
proper operation of the machine.  
NOTICE  
safety Instructions for Machinery  
1. rEAD THrOuGH THE ENTIrE MANuAL  
bEfOrE sTArTING MAcHINEry.  
Machinery presents serious injury hazards  
to untrained users.  
4. ALwAys usE HEArING prOTEcTION  
wHEN OpErATING MAcHINEry.  
Machinery noise can cause permanent  
hearing damage.  
5. wEAr prOpEr AppArEL. do not  
wear loose clothing, gloves, neckties, rings,  
or jewelry which may get caught in moving  
parts. Wear protective hair covering to con-  
tain long hair and wear non-slip footwear.  
2. ALwAys usE ANsI ApprOvED  
sAfETy GLAssEs wHEN OpErATING  
MAcHINEry. Everyday eyeglasses only  
have impact resistant lenses, they are  
not safety glasses.  
6. NEvEr OpErATE MAcHINEry wHEN  
TIrED, Or uNDEr THE INfLuENcE Of  
DruGs Or ALcOHOL. Be mentally alert  
at all times when running machinery.  
3. ALwAys wEAr AN ANsI ApprOvED  
rEspIrATOr wHEN OpErATING  
MAcHINEry THAT prODucEs DusT.  
Wood dust is a carcinogen and can cause  
cancer and severe respiratory illnesses.  
-6-  
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safety Instructions for Machinery  
7. ONLy ALLOw TrAINED AND prOp-  
17. rEMOvE ADJusTING KEys AND  
ErLy supErvIsED pErsONNEL TO  
OpErATE MAcHINEry. Make sure  
operation instructions are safe and clearly  
understood.  
wrENcHEs. Make a habit of checking for  
keys and adjusting wrenches before turn-  
ing machinery ON.  
18. cHEcK fOr DAMAGED pArTs  
bEfOrE usING MAcHINEry. Check  
for binding and alignment of parts, broken  
parts, part mounting, loose bolts, and any  
other conditions that may affect machine  
operation. repair or replace damaged  
parts.  
8. KEEp cHILDrEN AND vIsITOrs AwAy.  
Keep all children and visitors a safe dis-  
tance from the work area.  
9. MAKE wOrKsHOp cHILD prOOf. use  
padlocks, master switches, and remove  
start switch keys.  
19. usE rEcOMMENDED AccEssOrIEs.  
refer to the instruction manual for recom-  
mended accessories. the use of improper  
accessories may cause risk of injury.  
10. NEvEr LEAvE wHEN MAcHINE Is  
ruNNING. turn power Off and allow all  
moving parts to come to a complete stop  
before leaving machine unattended.  
20. DO NOT fOrcE MAcHINEry. Work at  
the speed for which the machine or acces-  
sory was designed.  
11. DO NOT usE IN DANGErOus  
ENvIrONMENTs. do not use machin-  
ery in damp, wet locations, or where any  
flammable or noxious fumes may exist.  
21. sEcurE wOrKpIEcE. use clamps or  
a vise to hold the workpiece when practi-  
cal. a secured workpiece protects your  
hands and frees both hands to operate the  
machine.  
12. KEEp wOrK ArEA cLEAN AND wELL  
LIT. Clutter and dark shadows may cause  
accidents.  
22. DO NOT OvErrEAcH. Keep proper foot-  
ing and balance at all times.  
13. usE A GrOuNDED EXTENsION cOrD  
rATEDfOrTHEMAcHINEAMpErAGE.  
undersized cords overheat and lose power.  
replace extension cords if they become  
damaged. do not use extension cords  
for 220V machinery.  
23. MANy MAcHINEs wILL EJEcT THE  
wOrKpIEcETOwArDTHEOpErATOr.  
Know and avoid conditions that cause the  
workpiece to "kickback."  
14. ALwAys DIscONNEcT frOM pOwEr  
24. ALwAys LOcK MObILE bAsEs  
(If usED) bEfOrE OpErATING  
MAcHINEry.  
sOurcE  
bEfOrE  
sErvIcING  
MAcHINEry. Make sure switch is in oFF  
position before reconnecting.  
25. bE AwArE THAT cErTAIN MATErI-  
ALs MAy cAusE AN ALLErGIc rEAc-  
TION in people and animals, especially  
when exposed to fine dust. Make sure you  
know what type of dust you will be exposed  
to and always wear an approved respira-  
tor.  
15. MAINTAIN MAcHINEry wITH cArE.  
Keep blades sharp and clean for best and  
safest performance. Follow instructions for  
lubricating and changing accessories.  
16. MAKE surE GuArDs ArE IN pLAcE  
AND wOrK cOrrEcTLy bEfOrE  
usING MAcHINEry.  
-7-  
Model G8688 (Mfg. 3/09+)  
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Additional safety for Metal Lathes  
1. rEAD AND uNDErsTAND THIs  
MANuAL bEfOrE OpErATING THIs  
MAcHINE. yOur sAfETy AND THE  
prOpEr usE Of THIs MAcHINE Is  
yOur rEspONsIbILITy.  
10. sAfETy cLEArANcEs. Make sure  
workpiece has adequate clearance before  
starting machine. Check tool and tool post  
clearance, chuck clearance, and saddle  
clearance before starting the lathe.  
2. cLEArING cHIps. do not clear chips by  
hand. use a brush, and never clear chips  
while the lathe is turning.  
11. prOpEr fEED rATEs. always use the  
appropriate feed and speed rates.  
12. sTOppING LATHE. never attempt to slow  
or stop the lathe chuck by using your  
hand.  
3. cHucK KEy sAfETy. always remove  
chuck key. never walk away from the lathe  
with the key in the chuck.  
13. ATTENDANcE. never walk away while  
the lathe is running. an unsupervised lathe  
that is running invites accidents.  
4. TOOL sELEcTION. always select the right  
cutter for the job, and make sure they are  
sharp. the right tool decreases strain on  
the lathe components and provides a better  
finish.  
14. LONG HAIr. tie up long hair. long hair  
down in a ponytail still poses a risk of  
entanglement with moving parts.  
5. sEcurING THE wOrKpIEcE. Make sure  
workpiece is properly held in chuck before  
starting lathe. a workpiece thrown from the  
chuck will severely injure you or a bystand-  
er.  
15. AuTOMATIc fEEDs. release any auto-  
matic feeds after completing a job.  
16. TurNING spEEDs. Select the turning  
speed which is appropriate for the type of  
work, material, and tool bit. allow the lathe  
to gain its full speed before beginning a  
cut.  
6. suppOrT LONG sTOcK. Stock extending  
beyond the headstock MuSt be supported.  
unsupported stock will begin to whip and  
cause serious injury to operator, bystanders  
and cause damage to the lathe. always turn  
supported long stock at slow rpM's.  
17. MOTOr DIrEcTION. never reverse motor  
direction while the lathe is in motion.  
7. INsTALLING LArGE cHucKs. get assis-  
tance when installing large chucks. large  
lathe chucks are very heavy and sometimes  
awkward to hold.  
18. GuArDs. you must make sure all guards  
are in place and working properly.  
19. TOOL pOsT cLEArANcE. adjust tool  
post to provide proper support for the turn-  
ing tool you will be using. test tool post  
clearance by rotating workpiece by hand  
before turning lathe ON.  
8. pINcH HAzArDs. protect your hands and  
the precision ground ways. always use a  
chuck cradle or piece of plywood over the  
ways of the lathe when servicing chucks.  
20. crAsHEs. Make sure no part of the tool,  
tool holder, compound slide, cross slide,  
or carriage will contact the chuck during  
operation.  
9. LATHE MAINTENANcE. never operate  
the lathe with damaged or worn parts.  
-8-  
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sEcTION 2: cIrcuIT rEQuIrEMENTs  
power connection Device  
110v Operation  
this machine comes with a plug, similar to figure  
2, to connect the machine to power.  
serious personal injury could occur if you  
connect the machine to power before com-  
GROUNDED  
5-15 RECEPTACLE  
pleting the setup process. DO NOT connect  
the machine to the power until instructed  
later in this manual.  
Grounding Prong  
5-15 PLUG  
Neutral Hot  
Electrocution or fire could  
result if machine is not  
grounded and installed in  
compliance with electrical  
codes. compliance MusT  
be verified by a qualified  
electrician!  
figure 2. typical 5-15 plug and receptacle.  
full Load Amperage Draw  
this machine draws the following amps:  
SHOCK HAZARD!  
amp draw................................................3 amps  
Two-prong outlets do not meet the grounding  
requirements for this machine. Do not modify  
or use an adapter on the plug provided—if  
it will not fit the outlet, have a qualified  
electrician install the proper outlet with a  
verified ground.  
power supply circuit requirements  
the power supply circuit for your machine MuSt  
be grounded and rated for the amperage given  
below. never replace a circuit breaker on an exist-  
ing circuit with one of higher amperage without  
consulting a qualified electrician to ensure compli-  
ance with wiring codes. If you are unsure about  
the wiring codes in your area or you plan to  
connect your machine to a shared circuit, con-  
sult a qualified electrician.  
Extension cords  
We do not recommend using extension cords, but  
if you find it absolutely necessary:  
•
•
•
use at least a 14 gauge cord that does not  
exceed 50 feet in length!  
Minimum Circuit Size.............................15 amps  
the extension cord must have a ground wire  
and plug pin.  
a qualified electrician MuSt size cords over  
50 feet long to prevent motor damage.  
-9-  
Model G8688 (Mfg. 3/09+)  
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sEcTION 3: sET up  
Needed for set up  
This machine presents  
serious injury hazards  
to untrained users. read  
through this entire manu-  
al to become familiar with  
the controls and opera-  
tions before starting the  
machine!  
the following are needed to complete the set up  
process, but are not included with your machine:  
Description  
Qty  
•
•
•
•
•
Safety glasses (for each person) .............. 1  
Shop towels............................................... 1  
Cleaning Solvent ........................................ 1  
level........................................................... 1  
M6-1 hex Bolts (optional for mounting, length  
is determined by workbench thickness)..... 4  
Flat Washers 6mm..................................... 4  
power drill.................................................. 1  
5⁄16 drill Bit................................................... 1  
phillips head Screwdriver #2 ..................... 1  
Flat head Screwdriver................................ 1  
open End Wrench 14mm........................... 1  
•
•
•
•
•
•
wear safety glasses dur-  
ing the entire set up pro-  
cess!  
The Model G8688 is a  
heavy machine. DO NOT  
over-exert yourself while  
unpacking or moving  
your machine—get assis-  
tance.  
unpacking  
the Model g8688 was carefully packed when it  
left our warehouse. if you discover the machine  
is damaged after you have signed for delivery,  
please immediately call Customer Service at  
(570) 546-9663 for advice.  
Save the containers and all packing materials for  
possible inspection by the carrier or its agent.  
Otherwise, filing a freight claim can be difficult.  
When you are completely satisfied with the condi-  
tion of your shipment, you should inventory the  
contents.  
-10-  
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Inventory  
M
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after all the parts have been removed from the  
two boxes, you should have the following items:  
F
d
box 1: (figures 3 & 4)  
Qty  
B
J
A. Model g8688 Mini lathe............................ 1  
b. lathe dog................................................... 1  
c. hex Wrenches 3, 4, & 5mm ................. 1 ea.  
D. Chuck Key .................................................. 1  
E. oil Container .............................................. 1  
f. handwheel handles................................... 2  
G. open End Wrench 8/10mm........................ 1  
H. open End Wrench 14/17mm ...................... 1  
I. dead Center Mt#2..................................... 1  
J. External Jaws for 3-Jaw Chuck.................. 3  
K. plastic gear Set 65, 60, 57, 55, 50, 45, 40  
(Qty 2), 35, & 30 tooth......................... 1 ea.  
L. Steady rest................................................ 1  
M. Faceplate 160mm....................................... 1  
N. Brackets with rubber Feet......................... 2  
O. Spare Fuse................................................. 1  
C
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figure 4. Model g8688 inventory.  
in the event that any nonproprietary parts are  
missing (e.g. a nut or a washer), we would be  
glad to replace them, or for the sake of expedi-  
ency, replacements can be obtained at your local  
hardware store.  
a
figure 3. Model 8688 Mini lathe.  
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Hardware recognition chart  
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clean up  
site considerations  
the unpainted surfaces are coated with a waxy  
oil to prevent corrosion during shipment. remove  
this protective coating with a solvent cleaner or  
degreaser, such as shown in figure 5. For thor-  
ough cleaning, some parts must be removed.  
for optimum performance, clean all moving  
parts or sliding contact surfaces. avoid chlo-  
rine-based solvents, such as acetone or brake  
parts cleaner that may damage painted surfac-  
es. always follow the manufacturer’s instructions  
when using any type of cleaning product.  
workbench Load  
refer to the Machine Data sheet for the weight  
and footprint specifications of your machine.  
Some workbenches may require additional rein-  
forcement to support both the machine and mate-  
rial.  
working clearances  
Consider existing and anticipated needs, size of  
material to be processed through each machine,  
and space for auxiliary stands, work tables or  
other machinery when establishing a location for  
your new machine. See figure 6 for the minimum  
working clearances.  
Gasoline and petroleum  
products have low flash  
points and can explode  
or cause fire if used to  
clean machinery. DO  
NOT use these products  
to clean the machinery.  
111⁄2  
"
273⁄4  
"
Many cleaning solvents  
are toxic if inhaled.  
Minimize your risk by only  
using these products in a  
well ventilated area.  
figure 6. Minimum working clearances.  
unsupervised children and  
visitors inside your shop  
could cause serious per-  
sonal injury to themselves.  
Lock all entrances to the  
shop when you are away and  
DO NOT allow unsupervised  
children or visitors in your  
shop at any time!  
G2544—solvent cleaner & Degreaser  
H9692—Orange power Degreaser  
great products for removing shipping grease.  
figure 5. Cleaner/degreasers available from  
grizzly.  
-13-  
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the rubber feet are attached to two metal brack-  
ets. the feet and the brackets bolt through the  
chip tray and into the base of the lathe.  
Moving & placing  
Mini Lathe  
To attach the rubber feet:  
1. remove the four phillips head screws from  
the bottom of the chip tray.  
The Model G8688 is a  
heavy machine. DO NOT  
over-exert yourself while  
unpacking or moving  
your machine—get assis-  
tance.  
2. attach the two brackets with the screws you  
removed in step 1 (see figure 8).  
the lathe should be mounted or placed on a  
strong well lit workbench of sufficient height so  
that you do not need to bend your back to per-  
form normal operations.  
To bolt the lathe to your workbench:  
1. remove the four M6-1 screws that secure the  
rubber feet and chip tray to the machine (if  
already fitted.)  
figure 8. installing the feet.  
2. use the diagram shown in figure 7 as a  
drill pattern to drill your holes into your work-  
bench.  
475mm  
72mm  
5⁄16"  
figure 7. g8688 drill pattern.  
3. use the appropriate length M6-1 bolts with a  
flat washer to secure the lathe and chip tray  
to the workbench.  
-14-  
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Installing Handwheel  
Handles  
components and Hardware Needed:  
Qty  
handwheel handles .......................................... 2  
To install the handwheel handles:  
1. using a screwdriver and 14mm open end  
wrench, thread the handwheel handles into  
the longitudinal and cross feed handwheels  
(see figure 9).  
Cross Slide Feed  
figure 10. Flipping the handle.  
2. tighten the nut securely against the  
handwheel while ensuring the handle can  
spin freely around the bolt with minimal end  
play.  
3. the cross slide feed has been turned around  
for shipment. With a 5mm hex wrench, remove  
the cap screw, turn the handle around, and  
retighten the cap screw (see figure 10).  
handwheel  
handles  
figure 9. installing the handwheel handles.  
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the purpose of the test run is to make sure the  
lathe is working properly.  
Test run  
To perform the test run:  
1. inspect the machine to ensure that all hand  
tools are out of the way, the chuck key is  
removed from chuck, and nothing is imped-  
ing the movement of the chuck. Check this by  
rotating the chuck by hand.  
Inspect your machine for  
loose nuts and bolts, and  
ensure no tools are left  
in or around the machine  
before connecting power.  
failure to do this may  
result in personal injury.  
2. Set the lathe to loW range on the back of  
the headstock. See page 18 for control loca-  
tions.  
3. plug the lathe in, and set the ForWard/  
oFF/rEVErSE switch to ForWard.  
Keep clothing rolled  
up and out of the way  
of machinery and keep  
hair pulled back.  
4. lift the EMErgEnCy Stop button in the  
direction of the arrow on the button and allow  
the button to pop out.  
5. gently rotate the VariaBlE SpEEd  
Control dial. a click will be heard as  
power is turned ON, speed will increase the  
further the knob is turned. the lathe should  
run smoothly with little or no vibration or  
rubbing noises when it starts. Strange or  
unnatural noises should be investigated and  
corrected before operating the machine fur-  
ther.  
Disconnect power to the  
machine when perform-  
ing any adjustments or  
maintenance. failure to  
do this may result in seri-  
ous personal injury.  
6. if the lathe is running smoothly, allow it to  
run for several minutes. gradually increase  
the rpM and let it run a couple of minutes at  
each change until you reach the maximum  
rpM of 2500.  
wear safety glasses dur-  
ing all operations on the  
lathe. failure to comply  
may result in serious  
personal injury.  
7. turn the lathe Off by pressing the  
EMErgEnCy Stop button or turn the  
VariaBlE SpEEd Control dial coun-  
terclockwise and return other switches to the  
Off position.  
8. repeat this process in the rEVErSE posi-  
tion.  
-16-  
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sEcTION 4: OpErATIONs  
speed & power  
Damage to your eyes, lungs, and ears could  
controls  
result from using this machine without  
proper protective gear. Always wear safety  
glasses, a respirator, and hearing protection  
when operating this machine.  
it is important to know all of the controls on the  
g8688 before operation. use figures 11 & 12 as  
a guide.  
B
a
C
d
Loose hair and cloth-  
ing could get caught in  
machinery and cause seri-  
ous personal injury. Keep  
loose clothing and long  
hair away from moving  
machinery.  
figure 11. power controls and features.  
NOTICE  
NOTICE  
If you have never used this type of machine  
or equipment before, wE sTrONGLy rEc-  
OMMEND that you read books, trade maga-  
zines, or get formal training before begin-  
ning any projects. regardless of the con-  
tent in this section, Grizzly Industrial will  
not be held liable for accidents caused by  
lack of training.  
DO NOT vOID yOur wArrANTy! DO NOT  
change spindle or leadscrew direction when  
lathe is running! Damage to your lathe will  
occur!  
A. vArIAbLE spEED cONTrOL DIAL:  
Controls the spindle speed range from 0-  
2500 rpMs.  
b. fuse socket: houses the overload protec-  
tion fuse.  
c. fOrwArD/Off/rEvErsE  
Toggle:  
Changes spindle direction from clockwise/  
neutral/counter-clockwise. do not change  
direction while lathe is running.  
D. EMErGENcy sTOp button: Shuts off  
power to the motor when closed as shown.  
-17-  
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chuck Jaws  
the 3-jaw chuck supplied with the lathe comes  
with 2 sets of jaws which are depicted in figure  
13. these are commonly known as the internal  
and external jaws. the internal jaw can hold a  
workpiece on the inside or outside surface of the  
jaw (exterior or interior of the part). the exter-  
nal jaw holds the part from the inside surface of  
the jaw (exterior of the part). Common uses are  
shown in figure 14.  
5
6
figure 12. rear controls.  
5. HIGH/LOw range control: Shifts the spin-  
dle speed range from high range, 0-2500  
rpM to loW range, 0-1100 rpM.  
Note: DO NOT shift from HIGH to LOW while  
the lathe is running!  
6. LEADscrEw  
fOrwArD/NEuTrAL/  
rEvErsE Lever:  
Changes leadscrew  
internal Jaw  
External Jaw  
rotating direction for power feed or threading  
operations.  
figure 13. internal & external jaws.  
Note: DO NOT shift leadscrew direction while  
the lathe is running!  
internal Jaw with  
External grip  
External Jaw  
internal Jaw  
with internal  
grip  
figure 14. Workholding options.  
-18-  
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8. insert jaw # 1 into this slot then continue to  
turn until the jaw is engaged with the lead  
thread.  
replacing chuck  
Jaws  
9. repeat these steps for Jaw #2 then Jaw #3.  
Changing jaws on the 3-jaw chuck is straight for-  
ward, but attention must be paid to the sequence  
in which the jaws are loaded into the chuck.  
it is important to follow these points when replac-  
ing jaws in your 3-jaw chuck:  
•
•
the jaws must be loaded in sequence begin-  
ning with the #1 jaw.  
To replace the jaws:  
1. unplug thE lathE!  
the chuck, scroll, and jaws should be thor-  
oughly cleaned before assembly. (a paint  
brush works great for cleaning the scroll).  
2. remove all of the jaws on the chuck by turn-  
ing the chuck key counterclockwise.  
•
•
•
never use a combination of inside and out-  
side jaws to hold a workpiece.  
3. Examine the inside of each slot in the chuck  
for debris and clean.  
donotover-tighten thechuckjaws. damage  
will occur, resulting in loss of accuracy.  
4. Each jaw will be numbered 1,2,3 or a,B,C.  
numbers can be found in the slot, at the bot-  
tom of each jaw.  
do not load the jaws into chuck incorrectly  
to do eccentric work. use a 4-jaw chuck for  
this purpose.  
5. locate jaw #1.  
6. insert the chuck key into the chuck.  
•
3-jaw chucks will always have a little run-out.  
it is advisable to measure the run-out of a  
workpiece after it is mounted in the chuck.  
if a higher degree of accuracy is desired,  
replace the 3-jaw chuck with a 4-jaw chuck  
and adjust the workpiece while using a dial  
indicator until the desired concentricity is  
achieved.  
7. turn the chuck key clockwise while looking  
straight into the face of the chuck. notice  
the beginning of the lead thread on the scroll  
come into view through the slot in a counter-  
clockwise direction (see figure 15).  
figure 15. lead thread.  
-19-  
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To install the chuck or faceplate:  
removing/Installing  
chuck or faceplate  
1. remove the studs from the chuck or face-  
plate you just removed, and screw them into  
the chuck or faceplate you want to install.  
the Model g8688 chuck is mounted directly to  
the spindle nose plate by the use of studs and  
hex nuts.  
2. Measure the stud protrusion, and make sure  
1
that the studs extend at least ⁄2" from the  
chuck or faceplate (see figure 16).  
To remove a chuck or faceplate from the lathe  
spindle:  
1
/
2
"
1. unplug thE lathE!  
2. place a piece of plywood over the bedways to  
protect your hands and the precision ground  
bedways in case the chuck should fall.  
pINcH HAzArD! protect  
your hands and preci-  
sion ground bedways  
with plywood when  
removing lathe chuck!  
The heavy weight of a  
falling chuck can cause  
serious injury.  
figure 16. installing studs.  
3. line up the studs with the holes on the spin-  
dle nose and secure the chuck/faceplate with  
the hex nuts (see figure 17).  
3. hold the chuck/faceplate with your hand or  
a chuck key, and use a 10mm wrench, to  
loosen and remove the three chuck mount-  
ing hex nuts on the back of the spindle nose  
plate.  
4. remove the chuck/faceplate from the spindle  
nose by pulling it out.  
Note: You may need to tap the chuck/face-  
plate with a rubber mallet to brake it free of  
its seal.  
figure 17. installing the faceplate.  
-20-  
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Tailstock  
Tailstock positioning  
the tailstock may be moved along the bedway to  
any desired position and locked in position by a  
hex nut at its base. the tailstock quill is a Mt#2  
taper and will hold tools that match that taper,  
such as dead center (included), live centers, drill  
chucks with arbors, and drill bits with tapers.  
Longitudinal positioning  
To adjust the tailstock longitudinally:  
1. using a 17mm wrench, loosen the tailstock  
lock nut shown in figure 18.  
2. Slide the tailstock into position along the  
bed, then tighten the clamp nut to secure the  
tailstock in the new position.  
Familiarize yourself with the tailstock components  
shown in figure 18.  
A. Quill Lock: locks the quill in position.  
b. Tailstock Handwheel: Moves the quill in and  
out of the tailstock.  
c. Tailstock Lock Nut: locks the tailstock in  
position to the lathe bed.  
D. Offset setscrew: helps maintain tailstock  
position during tailstock offset adjustment.  
E. Quill: holds tapered tools.  
f. Offset cap screw: loosening allows tailstock  
offset to be adjusted right or left of center.  
G. Quill Gib screw: removes play from tailstock  
quill.  
Offset positioning  
Changing the tailstock offset is a common meth-  
od for turning tapers. the offset cap screw is  
located under the tailstock and the tailstock  
must be removed from the bed for this adjust-  
ment. therefore, precision tolerances for this type  
of work will require trial-and-error adjustments  
(figure 18).  
To offset the tailstock:  
1. loosen the tailstock lock nut with a 17mm  
hex wrench and slide the tailstock off the  
lathe bed.  
a
B
E
2. loosen the offset cap screw just enough so  
the tailstock can slide.  
C
3. Slide the tailstock back onto the bed, then  
adjust to the desired offset.  
4. tighten the setscrew to hold the tailstock in  
position.  
g
F
5. Carefully slide the tailstock off of the bed,  
then tighten offset cap screw.  
d
figure 18. tailstock controls.  
6. Slide the tailstock back onto the bed, lock it in  
position and recheck your setting.  
7. repeat these steps as often as needed to  
obtain your desired results.  
8. For re-alignment refer to page 36.  
-21-  
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Dead center  
Tool post  
Stock protruding more than 21⁄2 times its diameter  
should be supported by a dead or live center.  
the tool post can rotate to four 90 degree preset  
stops or at any angle in between and hold a maxi-  
mum of four tools at a time.  
oil the tip of the dead center and use a very slow  
rpM during use. heat from friction will reduce the  
life of the center, and may damage the workpiece.  
if speed is important, invest in a live center.  
To use the tool post:  
1. Select a cutting tool that will produce the  
desired cut.  
To install the dead center:  
2. Secure the tool with a minimum of two cap  
screws with as little overhang as possible.  
this will help maintain rigidity and provide  
better results (see figure 19).  
1. Make sure the dead center and tailstock quill  
are clean and free of any dirt, dust, grease,  
or oil. Morse tapers will not interlock when dirt  
or excessive oil are present on the mounting  
surfaces.  
2. Extend the quill approximately 1" by turning  
the tailstock handwheel.  
3. Slide the dead center into the tailstock quill.  
the tapers will hold the center in place. during  
use, do not extend the quill less than 0, and  
no greater than 11⁄2" on the quill scale.  
To remove the tailstock dead center:  
1. use the tailstock handwheel to move the  
tailstock quill all the way back into the  
tailstock. this will push the dead center out  
of the quill.  
figure 19. proper tool post set up.  
3. Make sure the tip of the tool is right at the  
centerline on the workpiece. if it is not, use  
shims under the tool to bring it up to the cen-  
ter line. this lathe uses 5⁄16" tools.  
Note: To check if the tip is at the correct  
height, position the tool tip at the tip of the  
dead center in the tailstock.  
—if the two tips are even or the tool tip is  
lower than the dead center tip, the tool is  
at the correct height.  
—if the tool tip is above the dead center tip,  
it needs to be replaced with the correct tool  
or ground to bring it to center.  
-22-  
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3. loosen the three hex nuts and knurled  
screws so the finger position can be adjusted  
to fit around the outer diameter of the part.  
steady rest  
the steady rest serves as a support for long round  
shafts (l/d ratio of 3:1 or greater). the steady rest  
can be placed anywhere along the length of the  
workpiece.  
4. place the workpiece so it can fit inside the fin-  
gers. Secure the two ends of the workpiece  
with the chuck and dead center or between  
two centers as required (see figure 21).  
To install/use the steady rest:  
1. place the steady rest on the lathe bedways  
so the triangular notch fits over the angled  
portion of the bedway.  
2. tighten the bolt to hold the steady rest firmly  
in position (see figure 20).  
figure 21. Steady rest.  
5. position the steady rest where desired.  
tighten the bolt at base of the steady rest to  
secure in place.  
6. Set fingers snug while allowing free rota-  
tional movement of the workpiece. Secure  
the fingers by tightening the three hex nuts.  
lubricate the finger tips with an anti-seize  
grease during operation.  
figure 20. installing steady rest.  
7. after prolonged use, the fingers will show  
wear. Either mill or file the tips for a new con-  
tact surface.  
-23-  
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cross slide  
compound slide  
the cross slide moves perpendicular to the longi-  
tudinal axis and features a scale on the handwheel  
that displays graduations of one thousandths of  
an inch (0.001").  
Similar to the cross slide, the compound slide  
features a scale that displays graduations of one  
thousandths of an inch (0.001"). unlike the cross  
slide, the compound slide can be rotated to a set  
angle and then it can be moved back and forth  
along the axis of that angle.  
To adjust the cross slide:  
1. using the handwheel, back the cross slide  
away from your starting point by at least  
0.015", then move the cross slide forward to  
your starting point.  
To adjust the compound slide:  
1. loosen the compound slide bolts shown in  
figure 23 to allow it to be rotated.  
Note: This procedure will clear any free  
movement (or backlash) in the lead screw so  
your handwheel scale reading will be accu-  
rate. A small amount of free-play is normal,  
and must always be taken into account when  
using the cross slide.  
2. hold the handwheel still and turn the scale so  
the “0” mark lines up with the “0.000” mark  
on the cross slide, as shown in figure 22. as  
long as you avoid backlash by continuing to  
move the cross slide in the same direction,  
the scale on the handwheel will be accurate.  
figure 23. Compound slide bolts.  
2. rotate the compound slide to the angle  
needed for your procedure.  
3. tighten the compound slide bolts, and check  
the angle again to make sure it did not move  
during tightening.  
4. use the compound slide handwheel to move  
the tool back and forth along the axis of the  
new angle. Similar to adjusting the cross  
slide handwheel, make sure the threads are  
engaging and all backlash has been cleared  
before you set the handwheel scale to “0”, or  
it will not be accurate.  
figure 22. Cross slide handle and scale.  
3. after backing the cross slide away from the  
workpiece, remember to clear the backlash  
before moving the cross slide forward to the  
“0” mark for the next cut.  
-24-  
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To use the automatic carriage feed for normal  
turning:  
carriage  
1. use the manual feed handwheel to position  
the carriage to your desired starting point and  
set the scale on the handwheel to “0”.  
the longitudinal movement of the carriage (car-  
riage feed) on the Model g8688 can be controlled  
both manually and automatically.  
2. Set the lead screw ForWard/nEutral/  
rEVErSE lever to ForWard.  
To move the carriage feed manually:  
1. rotate the handwheel clockwise to move the  
carriage right and rotate the handwheel coun-  
terclockwise to move the carriage left.  
3. Set the ForWard/oFF/rEVErSE toggle to  
ForWard.  
4. turn the VariaBlE SpEEd Control dial  
to the desired rpM.  
2. Set the handwheel scale in the same manner  
as described in the cross slide instructions  
on page 25, and be sure to account for the  
backlash.  
5. Move the feed lever down to engage the  
half-nut, which in turn, makes the automatic  
carriage feed active (see figure 24).  
Automatic carriage feed  
the feed rate is based on the rotational speed of  
the leadscrew which is determined by the gear  
configuration in the headstock. the feed rate for  
normal turning is much less than used for screw  
cutting. therefore, it is very important to pay close  
attention to the gear combinations you have cho-  
sen before engaging the auto feed lever. the lathe  
comes from the factory set up for normal turning.  
gear changes for thread cutting will be covered  
later.  
crAsHING HAzArD! pay close attention  
to feed rate before engaging power feed.  
be alert and ready to shut Off power feed,  
otherwise carriage will crash into rotat-  
ing spindle, causing damage and possible  
injury!  
figure 24. Feed lever.  
6. lift the feed lever to stop the automatic car-  
riage feed.  
the automatic carriage feed can also oper-  
ate in the rEVErSE direction by changing the  
leadscrew direction after turning the lathe Off.  
-25-  
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Gear charts  
NOTICE  
There are many details to thread cutting  
and other lathe operations. It is not within  
the scope of this manual to cover detailed  
information regarding types of cutting tools,  
cutting speeds and working with different  
types of metal. If you do not have training  
in this area you MusT seek training from a  
qualified person before proceeding!  
the Model g8688 can be geared for a variety of  
different feed rates, so a chart is placed on the  
drive cover of the lathe that explain how to set up  
the gear combinations for threads per inch. the  
chart for metric thread pitches is included in the  
manual. See figure 27 for reference.  
Threading chart: By arranging the gears as  
shown on the threading charts (see figures 25  
– 26), you can set up the automatic carriage feed  
to cut any of the threads per inch (tpi) or metric  
thread pitches indicated.  
a
B
tpi  
gEarS  
tpi  
gEarS  
a
B
C
d
a
B
C
d
C
d
12  
13  
14  
16  
18  
19  
20  
22  
24  
40 65  
30 26 40 60  
65  
⁄
⁄
⁄
⁄
⁄
40 65 60 30 28 20 65  
35  
40  
45  
40 65  
40 65  
40 65  
35 32 20 65  
40 36 20 65  
⁄
⁄
⁄
adjuster  
45 38 20 50 60 57  
40 50 60 57 40 20 65  
50  
55  
60  
65  
⁄
⁄
⁄
⁄
figure 27. gear positions.  
40 65  
40 65  
40 65  
50 44 20 65  
55 48 20 65  
60 52 20 60  
⁄
⁄
⁄
change Gears  
figure 25. threads per inch chart (tpi).  
figure 27 shows the locations of the gears refer-  
enced in the gear charts figures 25 & 26.  
mm/  
gear  
pitch  
a
B
C
d
1
for example if you wanted to cut a ⁄2" x 13  
0.4  
0.5  
0.6  
0.7  
0.8  
1.0  
1.25  
1.5  
1.75  
2.0  
20  
20  
40  
40  
40  
20  
50  
40  
35  
40  
50  
50  
50  
50  
50  
60  
40  
60  
60  
60  
40  
60  
60  
60  
60  
60  
30  
60  
40  
30  
30  
thread on a piece of round stock.  
⁄
30  
1. unplug thE lathE!  
35  
40  
2. remove the gear cover.  
⁄
⁄
⁄
⁄
⁄
3. loosen the adjuster to disengage the gears  
from each other.  
4. remove the gears in place and replace with  
the 40, 65, 60, & 30 tooth gears in the called  
out positions.  
figure 26. Metric thread pitch chart.  
5. position the adjuster so the gears mesh.  
-26-  
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1
for example if you wanted to cut a ⁄4" x 20  
thread on a piece of round stock.  
6. once you are confident the settings are cor-  
rect, disengage the feed lever and turn the  
spindle Off .  
1. unplug thE lathE!  
7. Examine the thread dial chart in figure 28 to  
determine which numbers (on the thread dial)  
to engage the feed lever.  
2. remove the gear cover.  
3. loosen the adjuster to disengage the gears  
from each other.  
Note: There are a total of eight marks on the  
thread dial, ranging 1–8. To maintain accu-  
racy and consistency, engage the half nut on  
the same mark on each pass. Failure to start  
on the same number each time may lead to  
cutting off the thread made in the previous  
pass.  
4. remove the gears in place and replace with  
the 40, 65, & 55 tooth gears in the called out  
positions.  
Note: The C combination gear is not  
required.  
G8688 THrEAD DIAL  
5. remove the bushing from the d shaft and  
engage d gear directly to B gear.  
TpI  
12  
13  
14  
16  
18  
19  
20  
22  
24  
26  
28  
32  
36  
38  
40  
44  
48  
52  
scALE  
1,3,5,7  
1
6. Slip the bushing back over the shaft to hold d  
gear in position.  
1 or 5  
1 – 8  
1 or 5  
1
7. position the adjuster so the gears mesh.  
1,3,5,7  
1 or 5  
1 – 8  
1 or 5  
1,3,5,7  
1 – 8  
1,3,5,7  
1 or 5  
1 – 8  
1,3,5,7  
1 – 8  
1,3,5,7  
cutting Threads  
To cut threads:  
1. Set the compound rest to the appropriate  
angle for the given thread you want to cut.  
2. Set the tool tip perpendicular to the workpiece  
and center it vertically.  
3. Make sure the thread dial is engaged with the  
lead screw.  
4. Examine the thread charts and select the  
gear ratios you need (see figures 25 & 26).  
figure 28. g8688 thread dial chart.  
5. turn the spindle ON and select the rpM you  
want to use. Check to see that the lead screw  
is turning and verify that the apron moves in  
the correct direction by engaging the feed  
lever.  
-27-  
Model G8688 (Mfg. 3/09+)  
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aCCESSoriES  
sEcTION 5: AccEssOrIEs  
G9256—6" Dial caliper  
G9257—8" Dial caliper  
G9258—12" Dial caliper  
T20501—face shield crown protector 4"  
T20502—face shield crown protector 7"  
T20503—face shield window  
these traditional dial calipers are accurate to  
0.001" and can measure outside surfaces, inside  
surfaces, and heights/depths. Features stainless  
steel, shock resistant construction and a dust  
proof display.  
T20452—"Kirova" Anti-reflective s. Glasses  
T20451—"Kirova" clear safety Glasses  
H7194—bifocal safety Glasses 1.5  
H7195—bifocal safety Glasses 2.0  
H7196—bifocal safety Glasses 2.5  
T20502  
T20452  
T20503  
T20451  
H7194  
figure 31. grizzly® dial Calipers.  
figure 29. Eye protection assortment.  
G3632—Dial Indicator 0-1⁄2  
G1479—Dial Indicator 0-1"  
precision dial indicators are designed for use  
with magnetic bases. great for measuring run  
out on lathes, blades, etc. to 0.001 resolution.  
"
G5685—MT #1 Live center  
G5686—MT #2 Live center  
G5687—MT #3 Live center  
perfect for just about any turning requirement,  
these dust, chip, and oil proof live centers feature  
60° included angle and pre-loaded taper bear-  
ings.  
figure 30. dial indicator.  
figure 32. live center.  
-28-  
Model G8688 (Mfg. 3/09+)  
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5
H1508—Hss square Tool bits ⁄16" x 5⁄16" x 21⁄2  
bODy  
DIA.  
DrILL OvErALL  
our ground tool bits are M-2 hSS, making them  
some of the most durable tool bits around. Make  
your own specialized cutters in any shape using  
a silicon carbide grinding wheel (g8235-37) on  
your grinder.  
MODEL  
H4456  
H4457  
H4458  
H4459  
H4460  
H4461  
H4462  
H4463  
sIzE  
DIA.  
3⁄64"  
5⁄64"  
LENGTH  
1
1
2
3
4
5
6
7
8
⁄
8"  
11⁄4  
17⁄8  
"
"
3⁄16"  
1
7⁄64"  
2"  
⁄
4"  
5⁄16"  
7⁄16"  
⁄
8
"
21⁄8  
23⁄4  
"
"
1
3⁄16"  
1
3"  
⁄2"  
⁄8"  
⁄4"  
7⁄32"  
5
3
1
⁄
4"  
31⁄4  
31⁄2  
"
"
5⁄16"  
these high Speed Steel Center drills are preci-  
sion ground for unsurpassed accuracy.  
figure 35. h1508 hSS Square tool Bits.  
H5690—8-pc. pre-Ground Tool bit set  
tired of grinding your blank high speed steel tool  
bits? We've done it for you! 8-pc set comes with  
these sharpened profiles: offset right and left hand  
tools with chip breaker, straight and chip breaker  
style threading tools, internal threading tool, part-  
ing tool, boring tool and turning tool. these tool  
bits are evenly hardened to better than 64C.  
figure 33. h4456-63 hSS ground Center drills.  
G9864—3" four-Jaw, plain back Independent  
chuck  
Four-Jaw Chucks are used for holding odd shaped  
pieces or where zero tolerance is required. these  
four-jaw chucks have semi-steel bodies and hard-  
ened reversible jaws.  
figure 36. h5690 pre-ground tool Bit Set.  
figure 34. Model g9864 4-Jaw Chuck.  
-29-  
Model G8688 (Mfg. 3/09+)  
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sEcTION 6: MAINTENANcE  
cleaning  
Always disconnect power  
to the machine before  
performing maintenance.  
failure to do this may  
result in serious person-  
Cleaning the Model g8688 is relatively easy.  
remove all chips at the end of the day. Wipe up  
any coolant used that settled in the bottom of the  
chip tray or has settled on any other part of the  
al injury.  
lathe. dry off entire machine with a clean, dry  
towel. do not use compressed air to clean your  
lathe.  
schedule  
Lubrication  
For optimum performance from your machine,  
follow this maintenance schedule and refer to any  
•
•
Daily: Clean all machined surfaces, including  
chuck, and apply a thin film of iSo 68 gear oil  
or 10-30W synthetic motor oil.  
specific instructions given in this section. your use  
and certain shop environments may require you to  
perform these tasks more often.  
Daily: put a few drops of iSo 68 gear oil or  
10-30W synthetic motor oil on the bearing on  
each end of the leadscrew. you will need to  
remove the gear cover to access the left hand  
bearing.  
Daily:  
•
•
•
•
•
•
•
loose mounting bolts.  
damaged parts.  
poorly adjusted parts.  
Worn or damaged wires.  
any other unsafe condition.  
dirty machine.  
•
Daily: Clean and add a couple extra drops  
of iSo 68 gear oil, 10-30W synthetic motor  
oil, or way oil to the sliding surfaces of the  
bedway, cross slide and compound slide.  
Clean tooling and storage.  
Monthly:  
•
gear damage, wear, rust, sludge, or chip  
build-up inside gearbox and off motor. Clean  
and lube as necessary.  
•
•
Every six Months: apply a thin film of white  
lithium grease to the cross slide and com-  
pound slide leadscrews.  
Every six Months (or As Necessary):  
apply a thin film of white lithium grease to  
headstock and carriage drive gears.  
•
•
yearly: apply a thin film of white lithium  
grease tailstock quill and screw.  
yearly: use a spray lithium grease to lubri-  
cate the transmission gears. to do this,  
disconnect power, remove the front control  
panel, remove ground wire screw in head-  
stock, spray grease in hole while rotating  
chuck by hand and shifting gears between  
high and low.  
-30-  
Model G8688 (Mfg. 3/09+)  
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sEcTION 7: sErvIcE  
review the troubleshooting and procedures in this section to fix your machine if a problem develops. if you  
need replacement parts or you are unsure of your repair skills, then feel free to call our technical Support  
at (570) 546-9663.  
Troubleshooting  
Motor & Electrical  
Symptom  
possible Cause  
possible Solution  
Machine does not 1. Fuse has blown.  
start or a breaker  
trips.  
1. Correct short/replace fuse on control panel.  
2. Emergency stop push-button is engaged/ 2. rotate clockwise slightly until it pops out/replace it.  
faulty.  
3. plug/receptacle is at fault or wired incorrectly. 3. test for good contacts; correct the wiring.  
4. Computer board is at fault.  
4. inspect computer board; replace if faulty.  
5. Ensure hot lines have correct voltage on all legs and  
main power supply is switched on.  
5. power supply is at fault/switched oFF.  
6. Motor on button or on/oFF switch is at fault. 6. replace faulty on button or on/oFF switch.  
7. Spindle rotation switch is at fault.  
8. Wiring is open/has high resistance.  
7. turn switch to FWd/rEV; replace bad switch.  
8. Check for broken wires or disconnected/corroded  
connections, and repair/replace as necessary.  
9. test/repair/replace.  
9. Motor is at fault.  
Machine stalls or 1. Wrong workpiece material (metal).  
is underpowered.  
1. use metal with correct properties for your type of  
machining.  
2. Computer board is at fault.  
3. Motor speed rheostat is at fault.  
4. Motor brushes are at fault.  
2. inspect and replace if faulty.  
3. test and replace if faulty.  
4. remove brushes and clean/replace (refer to page  
35).  
5. pulley/sprocket slipping on shaft.  
6. Motor bearings are at fault.  
5. replace loose pulley/shaft.  
6. test by rotating shaft; rotational grinding/loose shaft  
requires bearing replacement.  
7. Machine is undersized for the task.  
7. use sharp lathe bits/chisels at correct angle; reduce  
feed rate/depth of cut; use cutting fluid if possible.  
8. turn switch to FWd/oFF/rEV; replace bad switch.  
8. Spindle rotation switch at fault.  
loud, repetitious 1. pulley setscrews or keys are missing or  
1. inspect keys and setscrews. replace or tighten if  
necessary.  
2. tighten fan or shim cover, or replace items.  
noise coming  
from machine  
at or near the  
motor.  
loose.  
2. Motor fan is hitting the cover.  
Motor overheats. 1. Motor overloaded.  
2. air circulation through the motor restricted.  
1. reduce load on motor.  
2. Clean out motor to provide normal air circulation.  
Motor is loud  
when cutting.  
overheats or  
bogs down in the  
cut.  
1. Excessive depth of cut or feed rate.  
1. decrease depth of cut or feed rate.  
2. rpM or feed rate wrong for cutting operation. 2. refer to rpM feed rate chart for appropriate rates.  
3. Cutting tool is dull. 3. Sharpen or replace the cutting tool.  
4. gear setup is too tight, causing them to bind. 4. readjust the gear setup with a small amount of  
backlash so the gears move freely and smoothly  
when the chuck is rotated by hand  
-31-  
Model G8688 (Mfg. 3/09+)  
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Operation and work results  
syMpTOM  
pOssIbLE cAusE  
cOrrEcTIvE AcTION  
Entire machine vibrates  
excessively upon startup  
and while running.  
1. Workpiece is unbalanced.  
1. reinstall workpiece so it is as centered with the  
spindle bore as possible.  
2. tighten/replace the belt as necessary.  
3. align the V-belt pulleys.  
2. loose or damaged belt(s).  
3. V-belt pulleys are not properly  
aligned.  
4. Worn or broken gear present.  
5. Chuck or faceplate has become  
unbalanced.  
4. inspect gears and replace if necessary.  
5. rebalance chuck or faceplate; contact a local  
machine shop for help.  
6. Spindle bearings badly worn.  
6. replace spindle bearings.  
Bad surface finish.  
1. Wrong rpM or feed rate.  
2. dull tooling or poor tool selection.  
1. adjust for appropriate rpM and feed rate.  
2. Sharpen tooling or select a better tool for the intend-  
ed operation.  
3. too much play in gibs.  
4. tool too high.  
3. tighten gibs.  
4. lower the tool position.  
Can't remove tapered tool 1. Quill had not retracted all the way  
1. turn the quill handwheel until it forces taper out of  
quill.  
from tailstock quill.  
back into the tailstock.  
2. debris was not removed from taper  
before inserting into quill.  
2. always make sure that taper surfaces are clean.  
Cross slide, compound  
slide, or carriage feed has 2. handwheel is loose.  
sloppy operation.  
1. gibs are out of adjustment.  
1. adjust gib screw(s) (see page 35).  
2. tighten handwheel fasteners.  
3. tighten any loose fasteners on lead screw mecha-  
nism.  
3. lead screw mechanism worn or  
out of adjustment.  
Cross slide, compound  
slide, or carriage feed  
handwheel is hard to  
move.  
1. gibs are loaded up with shavings, 1. remove gibs, clean ways/dovetails, lubricate, and  
dust, or grime.  
readjust gibs.  
2. gib screws are too tight.  
3. Backlash setting too tight (cross  
slide only).  
2. loosen gib screw(s) slightly, and lubricate bedways.  
3. Slightly loosen backlash setting by loosening the  
locking screw and adjusting the spanner ring at the  
end of the handle.  
4. Bedways are dry.  
4. lubricate bedways and handles.  
Cutting tool or machine  
1. tool holder not tight enough.  
1. Check for debris, clean, and retighten.  
1
components vibrate exces- 2. Cutting tool sticks too far out of tool 2. reinstall cutting tool so no more than ⁄3 of the total  
sively during cutting.  
holder; lack of support.  
3. gibs are out of adjustment.  
length is sticking out of tool holder.  
3. tighten gib screws (see page 35) at affected com-  
ponent.  
4. dull cutting tool.  
5. incorrect spindle speed or feed  
rate.  
4. replace or resharpen cutting tool.  
5. use the recommended spindle speed.  
inaccurate turning results  
from one end of the  
1. headstock and tailstock are not  
properly aligned with each other.  
1. realign the tailstock to the headstock spindle bore  
center line (see page 36).  
workpiece to the other.  
Chuck jaws won't move or 1. Chips lodged in the jaws.  
don't move easily.  
1. remove jaws, clean and lubricate chuck threads,  
and replace jaws.  
Carriage won't feed.  
1. gears are not all engaged.  
2. gears are broken.  
1. adjust gear positions.  
2. replace.  
3. loose screw on the feed handle.  
3. tighten.  
-32-  
Model G8688 (Mfg. 3/09+)  
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syMpTOM  
pOssIbLE cAusE  
cOrrEcTIvE AcTION  
Carriage hard to move.  
1. Carriage lock is tightened down.  
1. Check to make sure table locks are fully released.  
2. Chips have loaded up on bedways. 2. Frequently clean away chips that load up during  
turning operations.  
3. Bedways are dry and in need of  
lubrication.  
3. lubricate bedways and handles.  
4. longitudinal stops are interfering.  
4. Check to make sure that stops are floating and not  
hitting the center stop.  
5. gibs are too tight.  
5. loosen gib screw(s) slightly.  
gear change levers will not 1. gears not aligned in headstock.  
shift into position.  
1. rotate spindle by hand until gear falls into place.  
loud, repetitious noise  
coming from machine.  
1. gears not aligned in headstock or  
no backlash.  
1. adjust gears and establish backlash.  
2. Broken gear or bad bearing.  
3. Workpiece is hitting stationary  
object.  
2. replace broken gear or bearing.  
3. Stop lathe immediately and correct interference  
problem.  
tailstock quill will not feed 1. Quill lock knob is tightened down.  
out of tailstock.  
1. turn knob counterclockwise.  
-33-  
Model G8688 (Mfg. 3/09+)  
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3. tighten or loosen the set screw and check  
the sliding movement. it should be even and  
smooth while removing any play. readjust as  
needed.  
Adjusting Gibs  
4. tighten the three locknuts.  
NOTICE  
when adjusting gibs, keep in mind that  
the goal of gib adjustment is to remove  
unnecessary movement from the slides  
without causing them to bind. Loose gibs  
may cause poor finishes on the workpiece  
and undue wear on the slide, nut and lead  
screw. Over tightening will make turning  
the handwheel difficult.  
replacing Motor  
brushes  
Tools Needed  
Qty  
Slotted Screwdriver ........................................... 1  
there are two gib adjustments for the Model  
g8688—the cross-slide gib and the compound  
slide gib. the apron gib has been adjusted at the  
factory and should need no further attention. See  
figure 37 for location.  
To replace the motor brushes:  
1. unplug thE MaChinE!  
2. remove the front and rear caps (see figures  
38 & 44).  
Compound Slide  
Cross Slide  
figure 37. gib adjustment screws.  
figure 38. Front motor brush cap.  
3. replace the motor brushes.  
4. replace the caps.  
Tools Needed  
hex Wrench 2mm.............................................. 1  
Wrench 7mm..................................................... 1  
Qty  
To perform this procedure for the cross-slide  
gib and the compound-slide gib:  
1. unplug thE MaChinE!  
2. loosen the three locknuts.  
-34-  
Model G8688 (Mfg. 3/09+)  
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3. place the dead center in your tailstock.  
Tailstock Alignment  
4. attach a lathe dog to the bar stock and mount  
it between the centers (figure 40).  
the tailstock on the Model g8688 is aligned with  
the headstock at the factory. it will need to be re-  
aligned after adjusting for offset. See page 22 for  
instructions.  
5. turn approximately 0.010" off of the diam-  
eter.  
To align the tailstock:  
lathe dog  
1. Center drill a 6'' long piece of round cold rolled  
stock on both ends. Set it aside for use in step  
4.  
2. Make a dead center by turning a 60° point on  
a piece of scrap material (figure 39).  
Note: As long as it remains in the chuck, the  
point of your new center will be accurate to  
your spindle axis. Keep in mind the point will  
have to be refinished whenever it is removed  
and returned to the chuck.  
figure 40. Bar stock mounted between centers  
with lathe dog.  
figure 39. Finished dead center.  
-35-  
Model G8688 (Mfg. 3/09+)  
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adjust the tailstock  
half the distance of  
the taper.  
adjust the tailstock  
half the distance of  
the taper.  
figure 41. adjusting for headstock end taper.  
figure 42. adjusting for tailstock end taper.  
6. Measure the workpiece with a micrometer.  
if the stock is fat at the tailstock end, the  
tailstock needs to be moved toward the  
operator half the amount of the taper (figure  
41). if the stock is thinner at the tailstock end,  
the tailstock needs to be moved away from  
the operator by at least half the amount of the  
taper (figure 42).  
7. adjust the tailstock offset by half the amount  
of the taper. turn another 0.010'' off of the  
stock and check for a taper. repeat as nec-  
essary until the desired amount of accuracy  
is achieved.  
NOTICE  
DO NOT forget to lock down the tailstock  
after each adjustment. failure to follow this  
notice may cause damage to the tailstock,  
workpiece or both.  
-36-  
Model G8688 (Mfg. 3/09+)  
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Electrical components  
Fuse  
F/o/r toggle  
Printed Circuit Board  
rpM dial  
Emergency Stop Switch  
figure 43. g8688 Fuse location.  
Fuse  
RPM  
Dial  
F/O/R  
Spindle  
Toggle  
Motor  
Emergency  
Stop Switch  
rear Motor Brush  
figure 45. g8688 Wiring diagram.  
figure 44. g8688 Motor location.  
-37-  
Model G8688 (Mfg. 3/09+)  
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parts breakdown  
-38-  
Model G8688 (Mfg. 3/09+)  
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parts List  
REF PART #  
DESCRIPTION  
REF PART #  
DESCRIPTION  
1
P8688001  
P8688002  
P8688003  
PSS12M  
PN01M  
BED WAY  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
74  
75  
76  
77  
78  
79  
80  
81  
82  
83  
84  
85  
86  
87  
88  
89  
90  
91  
92  
93  
94  
95  
96  
97  
98  
99  
100  
PSB68M  
P8688053  
PSB108M  
P8688055  
PSB03M  
PW05M  
CAP SCREW M6-1 X 8  
COVER  
2
3 JAW CHUCK  
3
SPINDLE  
CAP SCREW M5-.8 X 45  
THREADS CUTTING CHART  
CAP SCREW M5-.8 X 8  
FLAT WASHER 4MM  
BUSHING W/KEY (2PC)  
GEAR 80T  
4
SET SCREW M6-1 x 25  
HEX NUT M6-1  
6
7
PK02M  
KEY 5 X 5 X 40  
8
PK29M  
KEY 4 X 4 X 8  
P8688058  
P8688059  
P8688060  
P8688061  
PW01M  
9
PSB33M  
P8688010  
P6206ZZ  
P8688012  
P8688013  
P8689080  
P8688015  
P8688016  
P8688017  
PSS31M  
P0516604  
P8688020  
PSS02M  
PR03M  
CAP SCREW M5-.8 X 12  
COVER  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
SHAFT  
BALL BEARING 6206ZZ  
SPACER  
SUPPORT PLATE  
FLAT WASHER 8MM  
HEX NUT M8-1.25  
SHAFT  
HEADSTOCK CASTING  
TRANSMISSION GEAR  
SPACER  
PN03M  
P8688064  
P8688065  
P8688066  
PSB24M  
P8688068  
PSS23M  
P8688070  
P8688071  
PW05M  
DIAL  
SPUR GEAR 45T  
NUT M27 X 1.5  
SHAFT 16T  
CAP SCREW M5-.8 X 16  
DIAL INDICATOR BODY  
SET SCREW M4-.7 X 10  
APRON  
SET SCREW M5-.8 X 8  
STEEL BALL 5MM  
COMPRESSION SPRING 4.9 X 9  
SET SCREW M6-1 X 6  
EXT RETAINING RING 12MM  
BALL BEARING  
H/L GEAR 12T/20T  
KEY 4 X 4 X 45  
GIB STRIP  
FLAT WASHER 4MM  
CAP SCREW M4-.7 X 8  
SHAFT  
P8688023  
P8688024  
PK71M  
PSB18M  
P8688074  
P8688075  
P8688076  
PFH19M  
P8688078  
P8688079  
P8688080  
P8688081  
P8688082  
PSS01M  
P8688084  
P8688085  
P8688086  
P8688087  
P8688088  
P8688089  
PN06M  
HALF NUT BASE  
ANGLE BLOCK  
FLAT HD SCR M4-.7 X 10  
GROOVE CAM  
P8688026  
P8688027  
PR01M  
H/L GEAR SHAFT  
PULLEY  
EXT RETAINING RING 10MM  
TIMING BELT LX136  
BAR  
P8688029  
P8689141  
P8688031  
P8688032  
P8688033  
P8688034  
P8688035  
P8688036  
P8688037  
P8688038  
P8688039  
P8688040  
P8688041  
P8688042  
PSB02M  
PSB03M  
P8688045  
P8688046  
PK03M  
HANDLE  
SHAFT  
SHIFTING ARM  
SHIFTING KNOB  
SHIFTING LEVER  
SHIFTING GRIP  
HANDLE  
FEEDING GEAR (A) 11T/54T  
FEEDING GEAR (B) 24T  
SET SCREW M6-1 X 10  
WHEEL  
HANDWHEEL HANDLE  
HANDLE, LARGE  
DIAL  
HANDLE MOUNT  
COMPRESSION SPRING  
INDICATOR  
BRACKET  
PINION 25T  
FEED SCREW  
SUPPORT SCREW  
PINION 20T  
HEX NUT M5-.8  
CAP SCREW M6-1 X 12  
SLIDE PLATE  
PSB26M  
P8688092  
P8688093  
P8688094  
P8688095  
P8688096  
PSB14M  
PN04M  
FIXED COVER  
CAP SCREW M6-1 X 20  
CAP SCREW M5-.8 X 8  
GEAR 45T  
SADDLE  
GIB STRIP  
FEEDING NUT  
SHAFT  
SWIVEL DISK  
KEY 3 X 3 X 8  
CAP SCREW M8-1.25 X 20  
HEX NUT M4-.7  
SET SCREW M4-.7 X 16  
CROSS SLIDE  
P8688048  
PSB53M  
P8688050  
PW03M  
MOUNT  
CAP SCREW M5-.8 X 18  
PINION 20T  
PSS35M  
P8688100  
FLAT WASHER 6MM  
-39-  
Model G8688 (Mfg. 3/09+)  
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parts List  
REF PART #  
DESCRIPTION  
REF PART #  
DESCRIPTION  
102  
105  
106  
107  
108  
109  
110  
111  
112  
113  
114  
115  
116  
119  
120  
121  
122  
123  
124  
125  
126  
127  
128  
129  
130  
131  
133  
134  
PSB50M  
CAP SCREW M5-.8 X 10  
COMPOUND REST  
SET SCREW M4-.7 X 14  
GIB STRIP  
151  
152  
153  
154  
155  
156  
157  
158  
159  
160  
161  
162  
163  
164  
165  
166  
167  
168  
169  
170  
171  
172  
173  
174  
175  
176  
177  
178  
179  
180  
181  
P8688151  
P8688152  
P8688153  
P8688154  
P8688155  
P8688156  
P8688157  
P8688158  
P8688159  
P8688160  
P8688161  
P8688162  
P8688163  
P8688164  
P8688165  
P8688166  
P8688167  
P8688168  
P8688169  
P8688170  
P8688171  
PR36M  
COVER  
P8688105  
PSS35M  
RUBBER PIPE  
REAR SPLASH GUARD  
F/N/R LABEL  
P8688107  
P8688108  
P8688109  
PSB06M  
COMPOUND REST  
POSITIONING PIN  
CAP SCREW M6-1 X 25  
CLAMPING LEVER  
TOOL REST  
H/L LABEL  
WARNING LABEL  
GEAR 30T  
P8688111  
P8688112  
P8688113  
P8688114  
P8688115  
PSB23M  
GEAR 35T  
GEAR 40T  
STUD M10-1.5 X 65  
CROSS FEEDING SCREW  
BRACKET  
GEAR 45T  
GEAR 50T  
GEAR 55T  
CAP SCREW M4-.7 X 12  
SPECIAL NUT M18  
MACHINE ID LABEL  
GEAR CHANGE WARNING LABEL  
SWITCH LABEL  
CONTROL BOX  
PLUG W/CORD  
GEAR 57T  
P8688119  
P8688120  
P8688121  
P8688122  
P8688123  
P8688124  
P8688125  
P8688126  
P8688127  
PK52M  
GEAR 60T  
GEAR 65T  
EXTERNAL JAWS (SET)  
3 JAW CHUCK KEY  
RUBBER PAD  
BRACING  
RUBBER FOOT  
FLAT HD SCR M3-.5 X 5  
CLAMP BLOCK  
EXT RETAINING RING 7MM  
PHLP HD SCR M5-.8 X 10  
PROTECTOR  
CHIP TRAY  
BRACKET  
KEY 3 X 3 X 15  
PS09M  
P8688129  
P8688130  
P8688131  
PSB56M  
LEAD SCREW  
P8688174  
PSB50M  
INDICATOR TABLE LABEL  
BRACKET  
CAP SCREW M5-.8 X 10  
HEX NUT M6-1  
CAP SCREW M6-1 X 25  
E-STOP SWITCH  
FUSE BOX  
PN01M  
CAP SCREW M3-.5 X 10  
RACK  
PSB06M  
P8688134  
P05161137  
P8689136  
P8689134  
P8688181  
134-1 P8688134-1  
POTENTIOMETER  
CLAMP PLATE  
135  
136  
137  
138  
139  
140  
141  
142  
143  
144  
145  
146  
148  
150  
P8688135  
PW04M  
SPEED CONTROL KNOB  
F/O/R SWITCH  
PC BOARD 3 TERMINALS V2.09.08  
ELECTRIC FILTER  
OIL CAN  
FLAT WASHER 10MM  
SET SCREW M5-.8 X 16  
TAILSTOCK CASTING  
TAILSTOCK SCREW  
BRACKET  
PSS34M  
182V2 P8688182V2  
P8688138  
P8688139  
P8688140  
PSB17M  
183  
200  
201  
202  
203  
P8688183  
P8688200  
P8688201  
PWR810  
HEX WRENCH SET  
WRENCH 8 X 10  
WRENCH 14 X 17  
FUSE 4A V2.06.07  
FACE PLATE  
CAP SCREW M4-.7 X 10  
TAILSTOCK QUILT  
CENTER  
P8688142  
P8688143  
P8688144  
P8688145  
P8688146  
P8688148  
P8688150  
PWR1417  
204V2 P8688204V2  
STUD M8-1.25 X 40  
CLAMP  
205  
206  
207  
208  
P8688205  
P8688206  
P8688207  
P8688208  
STEADY REST  
LATHE DOG  
HANDLE  
PULLEY  
MOTOR BRUSH  
MOTOR  
safety labels warn about machine hazards and ways to prevent injury. The owner of this machine  
MusT maintain the original location and readability of the labels on the machine. If any label is  
removed or becomes unreadable, rEpLAcE that label before using the machine again. contact  
Grizzly at (800) 523-4777 or www.grizzly.com to order new labels.  
-40-  
Model G8688 (Mfg. 3/09+)  
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FOLD ALONG DOTTED LINE  
Place  
Stamp  
Here  
GRIZZLY INDUSTRIAL, INC.  
P.O. BOX 2069  
BELLINGHAM, WA 98227-2069  
FOLD ALONG DOTTED LINE  
Send a Grizzly Catalog to a friend:  
Name_______________________________  
Street_______________________________  
City______________State______Zip______  
TAPE ALONG EDGES--PLEASE DO NOT STAPLE  
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WARRANTY CARD  
Name_____________________________________________________________________________  
Street_____________________________________________________________________________  
City _______________________ State_________________________ Zip _____________________  
Phone #____________________ Email _________________________________________________  
Model # ____________________ Order #_______________________ Serial #__________________  
The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop  
better products and services. Of course, all information is strictly confidential.  
1. How did you learn about us?  
____ Advertisement  
____ Card Deck  
____ Friend  
____ Website  
____ Catalog  
____ Other:  
2. Which of the following magazines do you subscribe to?  
____ Cabinetmaker & FDM  
____ Family Handyman  
____ Hand Loader  
____ Popular Science  
____ Popular Woodworking  
____ Precision Shooter  
____ Projects in Metal  
____ RC Modeler  
____ Rifle  
____ Shop Notes  
____ Wooden Boat  
____ Woodshop News  
____ Woodsmith  
____ Handy  
____ Woodwork  
____ Home Shop Machinist  
____ Journal of Light Cont.  
____ Live Steam  
____ Woodworker West  
____ Woodworker’s Journal  
____ Other:  
____ Model Airplane News  
____ Old House Journal  
____ Popular Mechanics  
____ Shotgun News  
____ Today’s Homeowner  
____ Wood  
3. What is your annual household income?  
____ $20,000-$29,000  
____ $30,000-$39,000  
____ $40,000-$49,000  
____ $70,000+  
____ $50,000-$59,000  
____ $60,000-$69,000  
4. What is your age group?  
____ 20-29  
____ 30-39  
____ 60-69  
____ 40-49  
____ 70+  
____ 50-59  
5. How long have you been a woodworker/metalworker?  
____ 0-2 Years ____ 2-8 Years  
____ 8-20 Years  
____20+ Years  
____10+  
6. How many of your machines or tools are Grizzly?  
____ 0-2 ____ 3-5  
____ 6-9  
7. Do you think your machine represents a good value?  
8. Would you recommend Grizzly Industrial to a friend?  
_____Yes  
_____Yes  
_____No  
_____No  
9. Would you allow us to use your name as a reference for Grizzly customers in your area?  
Note: We never use names more than 3 times. _____Yes _____No  
10. Comments:_____________________________________________________________________  
_________________________________________________________________________________  
_________________________________________________________________________________  
_________________________________________________________________________________  
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wArrANTy AND rETurNs  
WARRANTY AND RETURNS  
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from  
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,  
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty  
and any and all warranties that may be implied by law, including any merchantability or fitness, for any par-  
ticular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent  
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.  
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and  
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.  
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,  
or consequential damages arising from the use of our products.  
To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then  
issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the  
carton. We will not accept any item back without this number. Proof of purchase must accompany the  
merchandise.  
The manufacturers reserve the right to change specifications at any time because they constantly strive to  
achieve better quality equipment. We make every effort to ensure that our products meet high quality and  
durability standards and we hope you never need to use this warranty.  
Please feel free to write or call us if you have any questions about the machine or the manual.  
Thank you again for your business and continued support. We hope to serve you again soon.  
-45-  
Model G8688 (Mfg. 3/09+)  
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